In August, a patent was published that potentially offers clues into Apple’s rumored non-invasive monitoring solution. Apple submitted a patent application in 2015 for “Reference switch architectures for noncontact sensing of substances,” a method by which an electronic device can be calibrated to measure the concentration of a particular substance in a given sample. This is an optical system that enables determination of the concentration of a target substance by applying light with known properties to a sample. Although the patent documentation does not specifically explain what substances this proposed system might be used for, it resonates with rumors that Apple is working on a non-invasive glucose monitoring solution for use in their Apple Watch. Learn more about the science behind Apple’s patent application at appleinsider.

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